| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 910.3 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 945.58 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 938.52 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 847.03 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 945.85 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 938.79 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 910.55 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 903.5 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 938.4 | USD | 20251106 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 903.13 | USD | 20251106 |